E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
E04B 1/80 (2006.01) F16L 59/065 (2006.01)
Patent
CA 2488078
The invention relates to a thermal insulation panel, comprising: - a housing with: - a first main wall and a second mans wall which each extend perpendicularly of a temperature gradient, and - auxiliary walls connecting both main walls and extending parallel to the temperature gradient, wherein the auxiliary walls connect with ribs to the main walls, and~ - a filling placed in the housing and able to withstand pressure forces, - wherein the pressure within the housing is reduced to a value at which no heat transfer of any significance takes place, and~~ - wherein the housing is manufactured from metal, - wherein a strip of the auxiliary wall contacting a rib is welded to the main wall, and that a welding strip is welded onto the weld. With mere welding of a sufficiently thin metal foil it is practically impossible to obtain a weld of sufficient quality. With a sandwich weld it is possible to obtain a sufficiently strong and reliable welded connection, even when a very thin metal foil is used as auxiliary wall.
Fetherstonhaugh & Co.
Level Holding B.v.
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